perf(ext,runtime): remove using `SafeArrayIterator` from `for-of` (#17255)

1 files changed, 4 insertions, 2 deletions

diff --git a/ext/fetch/20_headers.js b/ext/fetch/20_headers.js
index a2fae2cfe..54e635522 100644
--- a/ext/fetch/20_headers.js
+++ b/ext/fetch/20_headers.js
@@ -68,7 +68,8 @@
    */
   function fillHeaders(headers, object) {
     if (ArrayIsArray(object)) {
-      for (const header of new SafeArrayIterator(object)) {
+      for (let i = 0; i < object.length; ++i) {
+        const header = object[i];
         if (header.length !== 2) {
           throw new TypeError(
             `Invalid header. Length must be 2, but is ${header.length}`,
@@ -205,7 +206,8 @@
       // spec but produce the same result.
       const headers = {};
       const cookies = [];
-      for (const entry of new SafeArrayIterator(list)) {
+      for (let i = 0; i < list.length; ++i) {
+        const entry = list[i];
         const name = byteLowerCase(entry[0]);
         const value = entry[1];
         if (value === null) throw new TypeError("Unreachable");